Nobsound A5 TPA3255 Stereo Amplifier HiFi Audio Class D Digital Power Amplifier with Filter Home Theater Bookshelf Speaker Compatible 300W x2

【Important Notice for International Buyers – Tomoayax Premium Audio Hi-Fi Japan】

■ Voltage Compatibility This product is designed exclusively for use in Japan (AC 100V, 50/60Hz).

Many regions use 120V or 220–240V. Using this product without a proper transformer in such voltage environments may result in malfunction, overheating, or serious and irreversible damage.

■ Plug Type This product uses a Japanese plug (Type A or B). A plug adapter may be required depending on your region.

■ Transformer Requirement (Very Important) A transformer is required for safe use.

A plug adapter only changes the plug shape and DOES NOT convert voltage. Using this product without a transformer may cause serious and irreversible damage.

■ Buyer Responsibility As this is high-end audio equipment, the buyer is fully responsible for confirming compatibility with their local voltage (100V / 120V / 220–240V) and usage environment before purchase.

■ No Return / No Refund Policy We do NOT accept returns or refunds for: ・Voltage mismatch (including 120V and 220–240V environments) ・Use without a transformer ・Plug incompatibility ・Damage caused by improper setup or usage

■ Liability We are not responsible for any damage, malfunction, or performance issues caused by improper use or incorrect voltage conditions.

■ Final Notice Please ensure full understanding of the above before purchasing. Use only under the correct voltage environment. HiFi Sound and Adjustable High-Pass Filter: The Douk Audio A5 features a TPA3255 chip and an adjustable high-pass filter (HPF) from 30Hz to 200Hz. This refines the mid-to-high frequencies and minimizes low-frequency interference. It pairs particularly well with bookshelf speakers and passive speakers, improving clarity and creating a dynamic soundstage. It delivers an immersive sound experience in home stereo and theater systems. For audiophiles seeking high-quality sound, it is one of the best choices for enjoying subtle nuances in sound. Easily Customizable Plug-and-Play Op-Amps: The Douk Audio A5 features a tempered glass access panel, making it easy to swap out the Op-Amps. In addition to the standard NE5532 Op-Amps, it can be upgraded to dual Op-Amps such as 2134, 2604, 5532, 2068, and muse02. This allows users to customize the sound profile to their liking. Since sound quality can be easily adjusted without disassembling the amplifier, it can be used with confidence even by those who are new to audio equipment maintenance. PFFB Technology and High-Performance PCB Design: This digital amplifier employs Post-Filter Feedback (PFFB) technology and a 4-layer immersion gold PCB. This reduces distortion and improves frequency response. It also enhances signal integrity and enables effective thermal management. As a result, it delivers exceptional audio precision and performs at its best when listening to music or watching movies. High-quality components ensure stable sound quality even during extended use. Stylish Design Perfect for Living Rooms and Studios: The Douk Audio A5 features a compact and modern design. With a transparent panel and adjustable internal LED lighting, it comes in multiple color variations, allowing you to create an atmosphere that matches your living room or studio. Its sophisticated appearance makes it a striking addition to any interior, serving not only as an audio device but also as a stylish accent piece. Equipped with a TPA3255 chip and high-quality components, the Douk Audio A5 delivers a high output of 300W x 2. Boasting ultra-low distortion (THD 0.002%), it also boasts excellent compatibility with the DAC-Q11. It provides superior sound quality in a variety of situations, from watching movies on weekends and listening to music at night to relaxing after work. Furthermore, in addition to the standard 32V/5A power adapter, even higher power output can be obtained by using a 48V/5A adapter. parameter - Brand: Nobsound - Model: A5 - Audio input: Stereo RCA - Audio output: Banana speaker jack / 3.5mm AUX - High-pass filter adjustment range: 30Hz-200Hz - MAX output efficiency: 300W*2 (4Ω) - Compatible speaker impedance: 4-8Ω - THD+N: 0.002% - SNR: ≥114dB - Input sensitivity: 2V - AUX rated output level: 3.7V - Frequency response: 20Hz-20KHz (±0.7dB) - Operating voltage: DC 24-48V - External dimensions (W*D*H): 130*102*33mm - Package dimensions (W*D*H): 265*240*65mm / 10.43*9.45*2.56in - Weight: 506g / 1.12lb - Package weight: 1.1kg / 2.43lb